JP2023116903A - Camera platform device, attachment method, and computer program - Google Patents

Abstract

To provide a camera platform device that can acquire the amount of deviation from a precise attachment position for every imaging apparatus.SOLUTION: A camera platform device allows attachment of an imaging apparatus thereto, and has: weight acquisition means that acquires the weight of the imaging apparatus; a motor that adjusts the angle of the imaging apparatus; detection means that detects a holding current value of the motor in a state in which the imaging apparatus is adjusted to be a predetermined angle; and deviation amount acquisition means that acquires the amount of deviation of an attachment position of the imaging apparatus based on the holding current value and the weight.SELECTED DRAWING: Figure 3

Description

The present invention relates to a platform device, an attachment method, and a computer program.

2. Description of the Related Art In pan head devices that carry out panning and tilting operations on which an imaging device such as a digital video camera is mounted, servo motors and stepping motors are used as driving sources for the panning and tilting operations. In the case of a servomotor, when the driving torque becomes large, it is necessary to supply a large current, and if the prescribed driving torque is exceeded, the servomotor cannot operate. In addition, when a stepping motor exceeds a maximum torque called pullout torque, it loses synchronism and becomes inoperable. Any motor is required to reduce the driving torque, that is, to reduce the load applied to the motor as much as possible.

On the other hand, in the case of a camera platform device with a replaceable imaging device, the distance between the tilt axis and the center of gravity of the imaging device changes depending on the mounting position of the imaging device, so the load on the tilt motor that drives the tilt axis changes. . Therefore, center-of-gravity adjustment, which is an operation for aligning the tilt axis and the center of gravity of the imaging device, is required. Patent Document 1 proposes a method of notifying the user of the position of the center of gravity by displaying the position of the center of gravity in order to assist the user in adjusting the center of gravity. .

JP 2011-123407 A

In the conventional example described above, a piezoelectric element is used for estimating the position of the center of gravity of the imaging device. However, when it is assumed that various imaging devices are remounted on the pan head device, the pan head device does not recognize that each imaging device has a different weight, so an accurate center-of-gravity adjustment amount cannot be displayed. There's a problem. On the other hand, at an actual shooting site, the imaging device is frequently remounted for the purpose of changing the shooting angle of view. Therefore, it is a problem to be able to easily adjust the center of gravity that occurs each time an imaging device is replaced and attached.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a camera platform device capable of acquiring an accurate amount of deviation of the mounting position for each imaging device.

The present invention
In the pan head device to which the imaging device can be attached,
weight acquisition means for acquiring the weight of the imaging device;
a motor for adjusting the angle of the imaging device;
detection means for detecting a holding current value of the motor when the imaging device is set at a predetermined angle;
and a deviation amount obtaining means for obtaining a deviation amount of the mounting position of the imaging device based on the holding current value and the weight.

According to the present invention, it is possible to provide a tripod head device capable of acquiring an accurate displacement amount of the mounting position for each imaging device.

1 is a perspective view showing the overall configuration of a camera platform device 101 of Example 1. FIG. 2 is a functional block diagram of the platform device and imaging device of Example 1. FIG. 5 is a flow chart showing an example of processing performed by a CPU of the head unit according to the first embodiment; It is the figure which looked at the camera platform apparatus 101 of FIG. 1 from the +Y direction. 2 is a view of the camera platform device 101 of FIG. 1 viewed from +Y and -X directions; FIG. FIG. 10 is a diagram showing a display example of the touch panel when center-of-gravity adjustment is required according to the first embodiment; FIG. 10 is a diagram showing a display example of the touch panel when center-of-gravity adjustment is not required according to the first embodiment; FIG. 2 is a diagram of the camera platform device 101 viewed from the +Y direction in a state in which the imaging device of FIG. 1 is tilted obliquely upward. FIG. 10 is a diagram showing an example of using an LED as notification means for notifying the user of the center-of-gravity adjustment amount in the second embodiment;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described using examples with reference to the drawings. However, the present invention is not limited to the following examples. In each figure, the same members or elements are denoted by the same reference numerals, and overlapping descriptions are omitted or simplified.

<Example 1>
FIG. 1 is a perspective view showing the overall configuration of a camera platform device 101 of Example 1, and FIG. 2 is a functional block diagram of the camera platform device and imaging device of Example 1. As shown in FIG. A configuration of a camera platform system according to a first embodiment of the present invention will be described with reference to the perspective view of FIG. 1 and the block diagram of FIG.

In the description of this embodiment, the directions indicated by the arrows in FIG. The rotation around the axial direction is defined as tilt rotation and pan rotation, respectively. In addition, in the camera platform device 101 of FIG. 1 in this embodiment, the surface of the imaging device 102 viewed from the +X direction in FIG. The surface viewed from the +Y direction is the right side, the surface viewed from the -Y direction is the left side, the surface viewed from the +Z direction (upward) is the top surface, and the surface viewed from the -Z direction is the bottom surface. call.

As shown in FIGS. 1 and 2, the camera platform device 101 of this embodiment includes a head unit 107 containing a pan motor and a tilt motor, a base 108, and an image pickup device fixing device to which a plurality of types of image pickup devices can be selectively attached. It is composed of a base 104, a mount member 106, a display panel 109, and the like. Reference numeral 102 denotes an imaging device incorporating an imaging device such as a CMOS image sensor; 103, a quick shoe attached to the imaging device 102; and 105, a lens for forming an optical image on the light receiving surface of the imaging device in the imaging device.

An operation unit 110 is located at a distance from the camera platform device 101 and is connected to the camera platform device 101 via, for example, a wired or wireless network so as to be communicable. The operation unit 110 has a display unit 111 (display means) including, for example, a liquid crystal display with a built-in touch panel. Other adjustment states and the like can be displayed.

The details of the operation input from the operation unit 110 are transmitted to the platform device 101 as an operation command, and the pan motor and the tilt motor in the head unit 107 perform pan rotation or tilt rotation according to the content of the operation command. The imaging angle of view of 102 can be changed.
An operation command from the operation unit 110 is also transmitted to the imaging device 102 via the platform device or directly, and zoom adjustment, focus adjustment, exposure adjustment, etc. of the imaging device 102 can also be remotely operated from the operation unit 110. is possible.

The imaging device 102 includes a camera, a lens, accessories such as a microphone, a rig, and the like. The mount member 106 is connected to a tilt shaft rotated by a tilt motor in the head section 107, and is configured to rotate around the Y-axis in FIG. 1 by rotating the tilt motor.

The mount member 106 has a dovetail groove 106a, and an engaging portion (not shown) provided on the side surface of the imaging device fixing base 104 can engage with the dovetail groove 106a. An engaging portion (not shown) on the side surface of the imaging device fixing base 104 is engaged with the dovetail groove 106a, and after adjusting the position along the Z-axis direction, the imaging device fixing base 104 is fixed to the mount member 106 with a screw or the like. is configured to

A dovetail groove 104 a is provided on the imaging device fixing base 104 , and the quick shoe 103 provided on the bottom surface of the imaging device 102 can be engaged with the dovetail groove 104 a of the imaging device fixing base 104 . After the quick shoe 103 is engaged with the dovetail groove 104a and the mounting position is adjusted along the X direction in FIG. It is configured. That is, the imaging device 102 can adjust the attachment positions in two directions (the X direction and the Z direction) perpendicular to the camera platform device 101 .

The imaging device 102 is connected to the imaging device fixing base 104 as described above, and the imaging device fixing base 104 is connected to the mount member 106 . In this state, by rotating the tilt motor in the head unit 107, the imaging device 102 is tilted around the Y-axis in the horizontal direction as shown in FIG. can be adjusted.

On the other hand, a connecting portion (not shown) that can be connected to a tripod or the like is provided at the bottom of the base 108 . Therefore, by driving the pan motor inside the head unit 107 in response to an operation command from the operation unit 110 while the base 108 is connected to a tripod or the like, the head unit 107 rotates around the pan axis (Z-axis) with respect to the base 108. rotate to

Next, with reference to FIG. 2, the configuration of the camera platform device 101 will be described in detail. The head unit 107 has a control board 200 , a pan motor 203 and a tilt motor 204 . A display panel 109 (display means) is provided on the rear surface of the head section 107 and is composed of a liquid crystal display or the like incorporating a touch panel or the like. A display panel 109 is for displaying an image captured by the imaging device.

The control board 200 has a CPU 201 as a computer, a memory 202 storing computer programs and information such as the total weight of various imaging devices. In addition, the control board 200 has a wired or wireless communication section for two-way communication with the operation section 110 . The pan motor 203 and tilt motor 204 also have encoders 205 and 206, respectively.

An operation command from the operation unit 110 is sent to the control board 200 via the network, and the pan motor 203 and the tilt motor 204 are respectively controlled via the CPU 201 according to the operation command. Servomotors capable of detecting control currents are used for the pan motors and tilt motors, and the holding current values of the pan motors and tilt motors at predetermined rotation angles can be detected. Encoders 205 and 206 provided in the pan motor and tilt motor detect the current rotation angles of the respective motors. Designed for good control.

The imaging device 102 has a camera control board 207, a lens control board 208, a camera microphone control board 209, and the like. A camera control board 207 controls the operation of an imaging device such as a CMOS image sensor (not shown). A lens control board 208 performs focus adjustment, zoom adjustment, and exposure adjustment of the lens 105 for forming an optical image on the light receiving surface of the image sensor. A camera microphone control board 209 is for controlling a microphone (not shown) and performing audio signal processing. Incidentally, the camera control board 207 is capable of two-way communication with the head section 107 . Furthermore, the camera control board 207 may include a wired or wireless communication section for communicating with the operation section 110 .

(Adjustment of center of gravity in X direction in embodiment 1)
Next, the center-of-gravity adjustment in the X direction will be described in detail with reference to FIGS. 3 to 7. FIG. FIG. 3 is a flow chart showing an example of processing performed by the CPU of the head unit according to the first embodiment, and center-of-gravity adjustment in this embodiment is performed along the flow shown in FIG. The CPU 201 as a computer of the control board 200 executes the computer program stored in the memory 202 to perform the operation of each step in the flow chart of FIG.

FIG. 4 is a view of the camera platform device 101 of FIG. 1 viewed from the +Y direction. FIG. 5 is a view of the camera platform device 101 of FIG. 1 viewed from the +Y and -X directions. FIG. 6 is a diagram showing a display example of the touch panel when center-of-gravity adjustment is required according to the first embodiment, and FIG. 7 is a diagram showing a display example of the touch panel when center-of-gravity adjustment is not required according to the first embodiment.

First, as shown in FIG. 4, the image pickup device fixing base 104 is placed in a horizontal state, and the quick shoe 103 is used to engage the image pickup device 102 with the image pickup device fixing base 104 so that the image pickup device fixing base 104 is in a semi-fixed state. Next, when the power of the head unit 107 is turned on and the attachment position adjustment mode is turned on, the flow of FIG. 3 starts, and the CPU 201 recognizes the connection of the imaging device 102 in step S301.

In order to recognize the connection, the quick shoe 103, the imaging device fixing base 104, and the mount member 106 are provided with electrical contacts. By engaging the quick shoe 103, the imaging device fixing base 104, and the mount member 106, the respective electrical contacts are electrically connected to each other to form a circuit.

Accordingly, the fact that the imaging device 102 is attached is transmitted to the control board 200 of the head section 107 via the contacts of the quick shoe 103, the imaging device fixing base 104, and the mounting member 106. FIG. The control board 200 recognizes that the imaging device 102 is connected to the head unit 107 thereby.

Furthermore, the camera control board 207 of the image pickup apparatus and the control board 200 of the head section 107 may be configured to perform two-way communication through the contacts of the quick shoe 103, the image pickup apparatus fixing base 104, and the mount member 106. FIG. The mounting of the imaging device 102 may be recognized by two-way communication between the camera control board 207 of the imaging device and the control board 200 of the head unit 107 . Alternatively, after the imaging device 102 has been completely mounted on the platform device 101, the user uses the operation unit 110 to notify the head unit 107 that the mounting has been completed, so that the head unit 107 recognizes that the imaging device 102 has been mounted. You can do it.

In step S<b>302 (weight acquisition step), the CPU 201 acquires the total weight of the connected imaging device 102 from the table stored in the memory 202 . That is, for example, the control board 200 acquires an ID as identification information of the imaging device 102 by two-way communication between the camera control board 207 and the control board 200 . The memory 202 preliminarily stores a table in which IDs of a plurality of imaging devices and total weight data of the respective imaging devices are stored in association with each other. Note that the electrical connection between the imaging device 102 and the head unit 107 may be performed by a wired cable or wirelessly. You may perform by the communication via.

Therefore, based on the ID of the imaging device 102 attached to the platform device, the total weight data associated with the ID is obtained from the table stored in the memory 202 . The ID of the imaging device 102 may be input by the user via the operation unit 110 and transmitted to the control board 200 . Data about the total weight of the imaging device 102 is stored in advance in a memory (not shown) provided in the camera control board 207, and the control board 200 retrieves the data about the total weight from the memory of the camera control board 207. You can get it. Here, step S302 functions as weight acquisition means.

In step S303 (shift amount acquisition step), the CPU 201 obtains the holding current value (first holding current value) of the tilt motor while adjusting the angle of the imaging apparatus horizontally (first angle) as shown in FIG. To detect. Then, the holding torque (holding moment) in the horizontal state is calculated based on the holding current value. In this embodiment, the holding torque is calculated by multiplying the motor current value (first holding current value) and the torque constant (coefficient).

Then, based on the holding moment and the total weight of the imaging device 102 acquired in step S302, the amount of center-of-gravity adjustment in the X direction (the first deviation amount of the mounting position) is calculated. Here, step S303 functions as a deviation amount acquisition unit that acquires the deviation amount of the mounting position of the imaging device based on the holding current value and the weight of the imaging device.
As shown in FIG. 4, since the center of gravity of the image pickup apparatus 102 is shifted in the -X direction with respect to the Y axis, which is the tilt axis of the tilt motor, the image pickup apparatus can be moved horizontally against the moment around the Y axis. The holding current flowing through the tilt motor 204 is increased in order to maintain the position at .

That is, as the center of gravity of the imaging device 102 deviates from the tilt axis (Y-axis) in the X direction, the holding current of the tilt motor for keeping the imaging device 102 horizontal increases.
Therefore, assuming that the reduction ratio of the speed reduction mechanism is R, the efficiency of the speed reduction mechanism is η, the torque constant of the tilt motor is K, and the holding current Ih that flows through the tilt motor in the horizontal state, the holding moment Mh about the Y axis is given by the following equation 1: is represented by
Mh=Ih×K×R×η (Formula 1)

The speed reduction mechanism is composed of a gear or the like for connecting the imaging device fixing base 104 and the tilt motor. Here, the speed reduction ratio R is defined to be a value greater than 1 when the rotation speed of the output increases as viewed from the tilt motor.
Further, the torque constant K is expressed by the ratio of the output torque to the input current when the tilt motor is evaluated as a single component, and is often described in catalogs of motor manufacturers. Efficiency η of the speed reduction mechanism is represented by the ratio of input power to output power, is a value greater than or equal to 0 and less than 1, and is measured in advance.

On the other hand, if the distance in the X direction from the center of gravity of the imaging device 102 to the tilt axis (Y-axis) is defined as the center-of-gravity adjustment amount Lh, the center-of-gravity adjustment amount Lh is the moment Mh around the Y-axis and the mass of the imaging device 102 . It is represented by the following formula 2 using the total weight m and the gravitational acceleration G.
Lh=Mh/(m×G) (Formula 2)
From Equations 1 and 2, the center-of-gravity adjustment amount Lh, which is the amount of deviation of the center of gravity in the X direction, is calculated by Equation 3 below.
Lh=(Ih×K×R×η)/(m×G) (Equation 3)

Next, in step S304, the CPU 201 determines whether the calculated X-direction center-of-gravity adjustment amount Lh is equal to or less than a predetermined threshold value. In the case of No, in step S305, the CPU 201 causes the display panel 109 provided on the back surface of the head section 107 to display the X-direction center-of-gravity adjustment amount Lh, as well as the display section 111 provided in the operation section 110. is displayed. As for the format of the display, it is desirable to indicate specific numerical values as shown in FIG. Alternatively, a bar display centered on 0 may be used. In FIG. 6, a display prompting the user to move the center of gravity of the imaging device 102 rearward by 51 mm (-X direction) is displayed. Here, step S305 functions as display control means for displaying the shift amount (gravity center adjustment amount).

The user moves the quick shoe 103 to which the imaging device 102 is attached by the displayed X-direction center-of-gravity adjustment amount Lh in the X-direction. can be made smaller. The movement of the quick shoe 103 in the X direction may be adjusted by the user by directly moving it, or by providing an X-direction adjustment motor for moving the quick shoe 103 in the X direction and driving the motor based on the user's instructions. can be In this case, the user issues an instruction to drive the X-direction adjustment motor based on a touch operation on the display panel 109 provided on the back of the head unit 107 or an operation on the operation unit 110 provided at a remote position. It should be noted that the X-direction adjustment motor may be configured to automatically adjust by the calculated X-direction center-of-gravity adjustment amount Lh.

After the adjustment in step S305, the process returns to step S303.
When the X-direction center-of-gravity adjustment amount Lh becomes sufficiently small, the X-direction center-of-gravity adjustment is completed. Also, the value indicated as the X-direction center-of-gravity adjustment amount Lh is successively updated, and this process is repeated until it is determined in step S304 that the X-direction center-of-gravity adjustment amount Lh is equal to or less than a predetermined threshold value. The threshold in step S304 may be set to, for example, 10 mm to 50 mm.

Further, when the X-direction center-of-gravity adjustment amount Lh is equal to or less than the threshold value, it is determined as Yes in step S304, and the process proceeds to step S306. In step S306, the CPU 201 causes the display panel 109 on the rear surface of the head unit 107 to display the X-direction center-of-gravity adjustment amount Lh to the effect that the X-direction center-of-gravity adjustment is unnecessary, as shown in FIG. A similar display is made on the display unit 111 that has been selected.

In addition, FIG. 7 shows that there is no shift in the position of the center of gravity of the imaging device and the position of the imaging device is correct. Thereby, the user can easily grasp that the adjustment in the X direction in FIG. 4 has been completed. In step S306, display control is performed so that a display prompting the user to tilt the imaging device 102 at an angle of 30° or more, for example, is displayed. Alternatively, for example, display control may be performed to indicate that the adjustment in the Z direction in FIG. 4 has not been completed.

(Adjustment of center of gravity in Z direction in FIG. 4 in Embodiment 1)
Next, the adjustment of the center of gravity in the Z direction in FIG. 4 will be described in detail with reference to FIG. FIG. 8 is a view of the camera platform device 101 viewed from the +Y direction with the image pickup apparatus of FIG. 1 tilted obliquely upward, and the angle of rotation about the tilt axis is different from that of FIG. In step S306, it is displayed that the deviation of the center of gravity in the X direction in FIG. shows an example in which the tilt angle θ is 45°.

Although it is desirable that the tilt angle θ is close to 90°, it may be 30°, for example. The direction of the tilt angle .theta. may be clockwise or counterclockwise, but it is desirable to determine the sign such as positive for clockwise rotation and negative for counterclockwise rotation. Further, when the center of gravity adjustment in the X direction is completed, the display panel 109 and the display unit 111 display a prompt to incline the tilt angle θ for adjusting the center of gravity in the Z direction in FIG. 4, as described above. is desirable. Alternatively, it may be desirable to indicate that the Z-direction adjustment in FIG. 4, for example, is not complete.

As shown in FIG. 8, when the camera platform device 101 is turned on while it is tilted at 45° (second angle), the tilt motor receives a holding current Iv (second holding current value). is flowing, so it is detected. In this embodiment, the center of gravity of the imaging device 102 is shifted from the center of gravity of the head unit 107 by the center-of-gravity adjustment amount Lv as shown in FIG. 8 (FIG. 4). Therefore, the holding current Iv flowing through the tilt motor increases. That is, if the center of gravity of the imaging device 102 is deviated from the tilt axis (Y-axis) in the Z direction of FIG. 4, the holding current Iv of the tilt motor increases according to the amount of deviation in the tilted state of FIG.

Therefore, in step S307, the CPU 201 calculates the holding torque in the horizontal state based on the holding current Iv (second holding current value), divides the holding torque by the total weight, and calculates the center-of-gravity adjustment amount Lv (the second holding current value of the mounting position). 2) is calculated.
Specifically, when Lv is the distance from the center of gravity of the imaging device 102 to the Y-axis (the amount of center-of-gravity adjustment), m is the mass of the imaging device 102, and G is the gravitational acceleration, the moment Mt around the Y-axis direction is given below. It is represented by Formula 4.

Mt=m×G×Lv×Sin θ (Formula 4)
From Equations 4 and 1, the center-of-gravity adjustment amount Lv is expressed by Equation 5 below.
Lv=(Iv×K×R×η)/(m×G×Sin θ) (Equation 5)

Then, in step S308, it is determined whether or not Lv is equal to or less than a predetermined threshold value, and in the case of No, in step S309, the CPU 201 causes the display panel 109 provided on the back surface of the head section 107 to display the center-of-gravity adjustment amount Lv. At the same time, the display unit 111 provided in the operation unit 110 is also made to display the same. Then, the process returns to step S307. Here, step S309 functions together with step S305 as display control means for displaying the shift amount (gravity center adjustment amount). The threshold in step S308 may also be set to, for example, 10 mm to 50 mm, but the threshold may be changed according to the total weight of the imaging device 102 recognized by the camera platform device 101, or the like.

By moving the imaging device fixing base 104 in the direction along the dovetail groove 106a by the amount of center-of-gravity adjustment Lv, the amount of center-of-gravity adjustment Lv presented after the movement can be made sufficiently small. The user may directly move the imaging apparatus fixing base 104 in the Z direction of FIG. Based on this, the motor may be driven for adjustment.

In this case, the user issues an instruction to drive the Z-direction adjustment motor by performing a touch operation on the display panel 109 provided on the back surface of the head unit 107 or by operating the operation unit 110 provided at a remote position. It should be noted that the Z-direction adjustment motor may be configured to automatically adjust the center-of-gravity adjustment amount Lv in the Z direction in FIG. 4 thus calculated. When the center-of-gravity adjustment amount Lv becomes sufficiently small, the result of step S308 is Yes, and in step S310, it is displayed that the center-of-gravity adjustment has also been completed in the Z direction of FIG.

<Example 2>
FIG. 9 is a diagram showing an example in which an LED lamp is used as notification means for informing the user of the center-of-gravity adjustment amount (mounting deviation amount) in the second embodiment. A control box 901 for assisting control of the imaging device 102 is attached to the lower surface of the imaging device fixing base 104, and a tally lamp 904 is attached to the head portion 107 for notifying the surroundings of the imaging situation by lighting. there is

For example, 21 LEDs 902 as indicators are arranged side by side in the control box 901, and the LEDs 902 at positions corresponding to the X-direction center-of-gravity adjustment amount Lh calculated by the same method as in the first embodiment are turned on. As a result, the user can intuitively know the center-of-gravity adjustment amount Lh in the X direction. In this embodiment, for example, when the center-of-gravity adjustment amount in the X direction is +50 mm, the LED 902 closest to the position +50 mm from the center mark 903 lights up in red. The closest LED 902 lights green.

For example, 11 LEDs 905 are arranged side by side in the tally lamp 904 . By lighting the LED 905 at a position corresponding to the center-of-gravity adjustment amount Lv calculated by the same method as in the first embodiment, in the same manner as the LED 902 described above, the user can intuitively be notified of the center-of-gravity adjustment amount Lv.

(Effects in the first and second embodiment)
As described above, in Embodiments 1 and 2, the platform device 101 recognizes the imaging device 102 and acquires information on the total weight (mass) of the imaging device 102 . By calculating the center-of-gravity adjustment amount based on the total weight and notifying the user, the user can adjust the center-of-gravity with a simple operation without trial and error.

In Examples 1 and 2, the center-of-gravity adjustment amount Lh is first calculated when the imaging apparatus is horizontal. I am doing the following. Conversely, however, the center-of-gravity adjustment amount Lv may be calculated with the image pickup apparatus set vertically, Lv may be set to a predetermined threshold value or less, and then the gravity center adjustment amount Lh may be calculated in a tilted state, and Lh may be set to a predetermined threshold value or less.

In the first and second embodiments, both the center-of-gravity adjustment amount Lh and the center-of-gravity adjustment amount Lv are calculated. Only one of the amount Lv and the center-of-gravity adjustment amount Lh may be calculated.

Further, in the first and second embodiments, the center-of-gravity adjustment amount Lv or the center-of-gravity adjustment amount Lh is calculated based on the formula, but the center-of-gravity adjustment amount Lh or the center-of-gravity adjustment amount Lv is obtained using a memory storing a function table corresponding to the formula. You can

Further, in Embodiments 1 and 2, the weight of the imaging device is obtained from the memory based on the ID of the imaging device. can be

In the first and second embodiments, the tilt motor rotates the imaging device around the Y-axis in the horizontal direction, but the tilt motor rotates the imaging device around an axis tilted from the horizontal direction. It can be.

Although the present invention has been described in detail based on its preferred embodiments, the present invention is not limited to the above embodiments, and various modifications are possible based on the gist of the present invention. They are not excluded from the scope of the invention. Also, some of the above embodiments may be combined as appropriate.

It should be noted that a computer program that implements the functions of the above-described embodiments may be supplied to the pan head device or the like via a network or various storage media for part or all of the control in this embodiment. Then, the computer (or CPU, MPU, etc.) in the platform device or the like may read and execute the program. In that case, the program and the storage medium storing the program constitute the present invention.

101: Pan head device 102: Imaging device 103: Quick shoe 104: Imaging device fixing base 105: Dovetail groove 106: Dovetail groove 107: Head section 108: Base 109: Display panel 901: Control box 902: LED
903: Center mark 904: Tally lamp

Claims (12)

In the pan head device to which the imaging device can be attached,
weight acquisition means for acquiring the weight of the imaging device;
a motor for adjusting the angle of the imaging device;
detection means for detecting a holding current value of the motor when the imaging device is set at a predetermined angle;
and a deviation amount obtaining means for obtaining a deviation amount of the mounting position of the imaging device based on the holding current value and the weight. 2. The camera platform apparatus according to claim 1, wherein said motor includes a tilt motor for adjusting a tilt angle. 3. The camera platform device according to claim 1, wherein the weight obtaining means obtains the weight of the imaging device based on the ID of the imaging device. The weight obtaining means stores the image pickup device associated with the ID of the image pickup device attached to the camera platform device from a memory in which the IDs of a plurality of image pickup devices and the weights of the respective image pickup devices are stored in advance in association with each other. 4. The camera platform device according to claim 3, wherein the weight of is acquired. 5. The camera platform apparatus according to claim 1, further comprising display control means for displaying the deviation amount acquired by said deviation amount acquisition means. The detection means detects a first holding current value of the motor when the image pickup device is set at a predetermined first angle, and detects a current value of the motor when the image pickup device is set at a predetermined second angle. 6. The camera platform device according to any one of claims 1 to 5, wherein the second holding current value is detected. The deviation amount acquiring means acquires a first deviation amount of the mounting position of the imaging device based on the first holding current value and the weight, and the imaging device based on the second holding current value and the weight. 7. The camera platform device according to claim 6, wherein the second deviation amount of the installation position of the device is acquired. 8. The camera platform apparatus according to claim 1, wherein said deviation amount acquiring means displays said deviation amount using display means for displaying an image. 8. The camera platform device according to claim 1, wherein said deviation amount obtaining means uses an LED lamp to display said deviation amount. The camera platform device according to any one of claims 1 to 9, wherein the imaging device is adjustable in mounting position in two directions perpendicular to the camera platform device. In the attachment method for attaching the imaging device to the pan head device,
a weight acquisition step of acquiring the weight of the imaging device;
an angle adjustment step of adjusting the angle of the imaging device by a motor;
a detection step of detecting a holding current value of the motor when the imaging device is set at a predetermined angle;
and a deviation amount acquiring step of acquiring a deviation amount of the mounting position of the imaging device based on the holding current value and the weight. A computer program for controlling each means of the camera platform device according to any one of claims 1 to 10 by a computer.

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